Scanner auxiliary fitting and method for measuring surface circular hole of workpiece

A technology for workpiece surface and auxiliary accessories, applied in measuring devices, instruments, optical devices, etc., can solve the problems of round hole accuracy, model deformation of round holes, and inconsistency of round hole diameters, and achieve high-precision reconstruction and enhancement. Geometric characteristics, the effect of increasing work efficiency

Active Publication Date: 2018-12-28
ZG TECH CO LTD
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

[0002] 3D laser scanners have been able to conveniently solve the fast 3D scanning tasks in most scenes, and obtain accurate 3D models of object surfaces in real time, but the extraction of some circular holes and the reconstruction of models may face some accuracy problems
[0003] In daily work, it is inevitable to encounter some scanning and extraction tasks of the position and size of the circular hole on the object, but for the common 3D scanning process, due to the special geometric structure of the circular hole, the scanned circular hole The model may be deformed, and the diameter of the round hole does not match the diameter of the actual round hole and other related accuracy problems, which will have a certain impact on other related work in the future.

Method used

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  • Scanner auxiliary fitting and method for measuring surface circular hole of workpiece
  • Scanner auxiliary fitting and method for measuring surface circular hole of workpiece
  • Scanner auxiliary fitting and method for measuring surface circular hole of workpiece

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Embodiment Construction

[0027] The principles and features of the present invention are described below in conjunction with the accompanying drawings, and the examples given are only used to explain the present invention, and are not intended to limit the scope of the present invention.

[0028] Such as figure 1 As shown, a scanner auxiliary accessory for measuring a round hole on the surface of a workpiece includes a mounting base 1, a supplementary light 2 and a camera 3 installed on the mounting base 1, and the camera 3 is provided with two, two The cameras 3 are distributed on both sides of the fill light 2 . The fill light 2 is used to enhance the spectral characteristics of the inner and outer regions of the circular hole, making it easier to obtain the geometrical characteristics of the circular hole.

[0029] In this specific example, if figure 2 As shown, the supplementary light 2 includes a lamp holder 21 and a plurality of LED lamps 22, the lamp holder 21 is provided with a wick, and th...

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Abstract

The invention relates to a scanner auxiliary fitting and a method for measuring a surface circular hole of a workpiece. The scanner auxiliary fitting comprises a mounting base, a light supplementing lamp and a camera mounted on the mounting base. The camera is provided with two cameras, and the two cameras are symmetrically distributed on two sides of the light supplement lamp. According to the scanner auxiliary fitting for measuring the surface circular holes of the workpiece, the light supplement lamp is provided in a 3D laser scanner. Performing lighting near the circular hole when the light supplementing lamp works, thereby enhancing geometric characteristics near the circular hole, enhancing the color difference around the circular hole and that in the circular hole, and providing a base to obtain a high-precision position and a radius of the circular hole by post image processing.

Description

technical field [0001] The invention relates to the technical field of optical image information extraction, in particular to a scanner auxiliary accessory and a method for measuring round holes on the surface of workpieces. Background technique [0002] 3D laser scanners have been able to conveniently solve the fast 3D scanning tasks in most scenes, and obtain accurate 3D models of object surfaces in real time, but the extraction of some circular holes and the reconstruction of models may face some accuracy problems. [0003] In daily work, it is inevitable to encounter some scanning and extraction tasks of the position and size of the circular hole on the object, but for the common 3D scanning process, due to the special geometric structure of the circular hole, the scanned circular hole The model may be deformed, and the diameter of the hole does not match the diameter of the actual hole and other related accuracy problems, which will have a certain impact on other relate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/00G01B11/08
CPCG01B11/002G01B11/08
Inventor 郑顺义王晓南成剑华任关宝
Owner ZG TECH CO LTD
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